Steam Holes

Mustang Australia

Author Topic: Steam Holes  (Read 202 times)

Offline Wharfie66

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Steam Holes
« on: February 18, 2021, 11:15:35 AM »
Hi guys,

I'm fitting edelbrock Estreet heads to my '68 built 289. Is it absolutely necessary to drill the 4 steam holes on each side of the block? If so what's the reason thanks.

Thanks for your help.


Offline Dwayne

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